Spectroscopy of Collective Excitations in Interacting Low-Dimensional Many-Body Systems Using Quench Dynamics
Other Condensed Matter
2011-11-09 v3 Strongly Correlated Electrons
Abstract
We study the problem of rapid change of the interaction parameter (quench) in many-body low-dimensional system. It is shown that, measuring correlation functions after the quench the information about a spectrum of collective excitations in a system can be obtained. This observation is supported by analysis of several integrable models and we argue that it is valid for non-integrable models as well. Our conclusions are supplemented by performing exact numerical simulations on finite systems. We propose that measuring power spectrum in dynamically split 1D Bose-Einsten condensate into two coupled condensates can be used as experimental test of our predictions.
Keywords
Cite
@article{arxiv.cond-mat/0702343,
title = {Spectroscopy of Collective Excitations in Interacting Low-Dimensional Many-Body Systems Using Quench Dynamics},
author = {Vladimir Gritsev and Eugene Demler and Mikhail Lukin and Anatoli Polkovnikov},
journal= {arXiv preprint arXiv:cond-mat/0702343},
year = {2011}
}
Comments
4 pages, 2 figures; replaced with revised version